Diagnostic instrument with a display screen



FIG. 1 is a right front perspective view of a diagnostic instrument witha display screen showing our new design;

FIG. 2 is a left rear perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a right side view thereof; and,

FIG. 7 is a top plan view thereof.

The bottom view is plain and unornamented and is not part of the claimeddesign. The broken lines depict environmental structure and elementsdepicted in broken lines are not part of the claimed design.

CLAIM The ornamental design for a diagnostic instrument with a displayscreen, as shown and described.